Adjustable clamp and method of use

ABSTRACT

An adjustable clamp for mounting an auxiliary tool onto a loader bucket is provided. The adjustable clamp includes a first clamping member possessing a first clamping surface and a second clamping member possessing a second clamping surface. The second clamping member is slidably connected to the first clamping member such that the second clamping surface is movable along an angled path toward the first clamping surface to clamp the loader bucket between the first and second clamping surfaces. Also provided is a snow plow assembly including a snow plow and an adjustable clamp. A method of mounting a snow plow onto a loader bucket by way of an adjustable clamp is also provided.

FIELD OF DISCLOSURE

This disclosure relates generally to adjustable clamps, and moreparticularly, to adjustable clamps for mounting a snow plow onto aloader bucket.

BACKGROUND

Loading machines such as tractors and backhoes generally include aloader bucket designed to perform a primary loading task. The loaderbucket can be adapted to perform an auxiliary loading task by outfittingthe loading bucket with an auxiliary tool. A snow plow is an example ofan auxiliary tool that can be mounted onto a loader bucket to make theloader bucket better suited for snow removal.

Clamps are commonly used to attach an auxiliary tool to a loader bucket.One known clamp possesses a first arm and second arm spaced apart by afixed distance. A lip of the loader bucket is positioned in the gapbetween the first and second arms. The gap is much wider than the bucketlip to facilitate alignment of the bucket lip between the first andsecond arms. The relatively large size of the gap, however, results in aloose connection between the clamp and the bucket lip.

Another known clamp employs a threaded fastener to secure the loaderbucket between the first and second arms. The threaded fastener passesthrough a hole in one of the arms and is tightened against the bucketlip. While the threaded fastener helps decrease the looseness of theconnection between the clamp and the loader bucket, the threadedfastener is not very durable because of its thread, and the threadedfastener provides a limited amount of clamping force. Additionally,screwing and unscrewing the threaded fastener is time-consuming for anoperator.

SUMMARY

Disclosed herein is an adjustable clamp for mounting an auxiliary toolonto a loader bucket. The adjustable clamp includes a first clampingmember possessing a first clamping surface and a second clamping memberpossessing a second clamping surface. The second clamping surface facesthe first clamping surface. The second clamping member is slidablyconnected to the first clamping member such that the second clampingsurface is movable along an angled path toward the first clampingsurface to clamp the loader bucket between the first and second clampingsurfaces.

Also disclosed is a snow plow assembly including a snow plow, a firstadjustable clamp and a second adjustable clamp. The first adjustableclamp includes a first clamping member and a second clamping member. Thefirst clamping member of the first adjustable clamp is connected to thesnow plow and possesses a first clamping surface. The second clampingmember of the first adjustable clamp possesses a second clamping surfacespaced apart from and facing the first clamping surface. The secondclamping member of the first adjustable clamp is slidably connected tothe first clamping member of the first adjustable clamp such that adistance separating the first and second clamping surfaces of the firstadjustable clamp is adjustable. The second adjustable clamp includes afirst clamping member and a second clamping member. The first clampingmember of the second adjustable clamp is connected to the snow plow andpossesses a first clamping surface. The second clamping member of thesecond adjustable clamp possesses a second clamping surface spaced apartfrom and facing the first clamping surface. The second clamping memberof the second adjustable clamp is slidably connected to the firstclamping member of the second adjustable clamp such that a distanceseparating the first and second clamping surfaces of the secondadjustable clamp is adjustable.

Further disclosed is a method of using an adjustable clamp to mount asnow plow onto a lip of a loader bucket. The adjustable clamp includes afirst clamping member slidably connected to a second clamping member.The method includes positioning the lip of the loader bucket between thefirst and second clamping members, and connecting the second clampingmember to the loader bucket with a chain or strap. The method includestightening the chain or strap to cause the second clamping member tomove toward the first clamping member and thereby clamp the lip of theloader bucket between the first and second clamping members.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of an adjustable clamp of the presentdisclosure prior to assembly;

FIG. 2 is a perspective view of the reverse side of the adjustable clampof FIG. 1;

FIG. 3 depicts a perspective view of the adjustable clamp of FIG. 1 inan open position;

FIG. 4 illustrates a perspective view of the adjustable clamp of FIG. 1in a closed position; and

FIG. 5 is a side view of a snow plow mounted onto a loader bucket withtwo adjustable clamps according to the present disclosure.

FIG. 6 is a perspective view of a snow plow mounted onto a loader bucketof a tractor with two adjustable clamps according to the presentdisclosure.

DETAILED DESCRIPTION

FIG. 1 illustrates a perspective view of an adjustable clamp 100 priorto assembly. In one embodiment, the adjustable clamp 100 is configuredto mount an auxiliary tool, such as a snow plow, onto a loader bucket.The clamp 100 includes a first clamping member 110 possessing a firstclamping surface 112 and a second clamping member 114 possessing asecond clamping surface 116. The first and second clamping surfaces 112and 114 are spaced apart and face each other. The second clamping member114 is slidably connected to the first clamping member 110. Soconfigured, the first and second clamping surfaces 112 and 116 can bepressed against opposite sides of the loader bucket and thereby providea secure connection between the adjustable clamp 100 and the loaderbucket.

Each of the foregoing components of the adjustable clamp 100, andmethods of operating the adjustable clamp 100, will now be described inmore detail.

As illustrated in FIG. 1, the first clamping member 110 may include afirst leg portion 118 and a second leg portion 120 which extend adjacentto each other along a longitudinal axis A1 of the clamp 100. The firstand second leg portions 118 and 120 extend from a base portion 122 ofthe first clamping member 100 and terminate at respective free ends 124and 126. The first leg portion 118, the second leg portion 120 and thebase portion 122 form a U-shape having an open end adjacent the freeends 124 and 126 and a closed end adjacent the base portion 122. Theopen end of the U-shape is arranged at a rear end of the adjustableclamp 100. The free end 124 may be shaped like a ramp to facilitate theinsertion of the loader bucket. The first leg portion 118, the secondleg portion 120 and the base portion 122 may be formed as single,unitary structure as shown in FIG. 1, or they can be formed as separatecomponents which are welded (or otherwise secured) together.

The first clamping surface 112 is formed by the surface of the first legportion 118 that faces the second leg portion 120. The first leg portion118 may include a wear resistant pad that forms the first clampingsurface 112. The first clamping surface 112 may have a roughened and/ortextured finish, such as a tread pattern, to increase friction betweenthe first clamping surface 112 and the loader bucket. While the firstclamping surface 112 illustrated in FIG. 1 is a planar surface extendingparallel to the longitudinal axis A1, in other embodiments the firstclamping surface 112 may be curved and/or possess a plurality of ridgesand valleys.

The first clamping member 110 is connectable to an auxiliary tool suchas a snow plow. A connector plate 130 is provided for this purpose. Inone embodiment, screws or bolts are employed to fasten the connectorplate 130 to the snow plow such that the first clamping member 110 isremovably attached to the snow plow. The connector plate 130 ispositioned at a front end of the adjustable clamp 100.

A first hole 132 and a second hole 134 are formed in the second legportion 120 of the first clamping member 110. Each of the first andsecond holes 132 and 134 extends through the second leg portion 120 sothat opposite ends of each hole open to opposite sides of the second legportion 120. As described further below, each of the first and secondholes 132 and 134 is configured to receive a pin. The shapes of firstand second holes 132 and 134 may correspond to the shapes of theirrespective pins. In one embodiment, both the holes 132 and 134 and theirrespective pins possess a circular cross-section. The diameters of theholes 132 and 134 may be substantially same as the diameters of the pinsso that the holes 132 and 134 restrain movement of the pins.

The second clamping member 114 includes spaced apart first and secondside plates 136 and 138. The distance separating the first and secondside plates 136 and 138 is sufficient for the second leg portion 120 ofthe first clamping member 110 to be inserted between the first andsecond side plates 136 and 138. When assembled, the first and secondside plates 136 and 138 border opposite sides of the second leg portion120 of the first clamping member 110. In one embodiment, welds 141connect the first and second side plates 136 and 138 to a base plate140. The base plate 140 spans the distance separating the first andsecond side plates 136 and 138. An end 142 of the base plate 140 ispositioned adjacent to the free end 126 of the first leg portion 120when the adjustable clamp 100 is assembled. The end 142 may beramp-shaped to facilitate the insertion of the loader bucket into theadjustable clamp 100. While the first side plate 136, the second sideplate 138 and the base plate 140 are shown as separate components, insome embodiments, the first side plate 136, the second side plate 138and the base plate 140 are formed in one-piece as a single, unitarystructure.

The second clamping surface 116 is formed by the surface of the baseplate 140 opposite to the first and second side plates 136 and 138. Thesecond clamping surface 116 faces the first clamping surface 112 whenthe adjustable clamp 100 is assembled. The base plate 140 may include awear resistant pad that forms the second clamping surface 114. Toincrease friction between the second clamping surface 112 and the loaderbucket, the second clamping surface 112 may have a roughened and/ortextured finish, such as a tread pattern. The second clamping surface112 illustrated in FIG. 1 is planar and parallel to the longitudinalaxis A1. In other embodiments, the second clamping surface 112 may becurved and/or possess a plurality of ridges and valleys.

First and second slots 146 and 148 are formed in the first side plate136. Each of the first and second slots 146 and 148 extends through thefirst side plate 136 so that opposite ends of each slot open to oppositesides of the first side plate 136. The first slot 146 includes an innersurface 150 and the second slot 148 includes an inner surface 152. Eachof the inner surfaces 150 and 152 is angled relative to the longitudinalaxis A1 of the adjustable clamp 100. The inner surface 150 forms anangle α₁ with the longitudinal axis A1 of approximately (e.g., ±10%)20-60 degrees, and for example between 30-50 degrees. The inner surface152 forms an angle α₂ with the longitudinal axis A1 of approximately(e.g., ±10%) 20-60 degrees, and for example between 30-50 degrees. Inone embodiment, the angle α₁ between the inner surface 150 and thelongitudinal axis A1 is equal to the angle α₂ between the inner surface152 and the longitudinal axis A1 so that the inner surface 150 isparallel to the inner surface 152. FIG. 1 shows that the inner surface150 and the inner surface 152 are both planar. In other embodiments, theinner surface 150 and/or the second inner surface 152 may be curved.

As illustrated in FIG. 2, first and second slots 156 and 158 are formedin the second side plate 138 and are aligned, respectively, with thefirst and second slots 146 and 148 formed in the first side plate 136.The first slot 156 includes an inner surface 157 and the second slot 158includes an inner surface 159. The first slot 156 of the second sideplate 138 possesses the same shape, size and orientation as the firstslot 146 of the first side plate 136, and the second slot 158 of thesecond side plate 138 has the same shape, size and orientation as thesecond slot 148 of the first side plate 136. Accordingly, the anglebetween the inner surface 157 and the longitudinal axis A1 is equal tothe angle α₁ between the inner surface 150 and the longitudinal axis A1.Similarly, the angle between the inner surface 159 and the longitudinalaxis A1 is equal to the angle α₂ between the inner surface 152 and thelongitudinal axis A1.

When the adjustable clamp 100 is assembled, the first hole 132 isaligned with the first slot 146 of the first side plate 136 and thefirst slot 156 of the second side plate 138, and the second hole 134 isaligned with the second slot 148 of the first side plate 136 and thesecond slot 158 of the second side plate 138. A first pin 160 isinserted through the first slot 146 of the first side plate 136, thefirst hole 132 and the first slot 156 of the second side plate 138. Asecond pin 162 is inserted through the second slot 148 of the first sideplate 136, the second hole 134 and the second slot 158 of the secondside plate 138. The first pin 160 is configured to slide along the innersurface 150 of the first slot 146 and the inner surface 157 of the firstslot 156. The second pin 162 is configured to slide along the innersurface 152 of the second slot 148 and the inner surface 159 of thesecond slot 158. Lubricant may be applied to the inner surfaces of theslots to facilitate the sliding movement of the first and second pins160, 162. The first and second pins 160 and 162 generally do not moverelative to the first clamping member 110 because their movement isconstrained by the first and second holes 132 and 134. The first andsecond pins 160 and 162 may each have a cylindrical shape and may eachpossess a circular circumferential surface.

A head 164 of the first pin 160 and a head 166 of the second pin 162abut against the second side plate 138 when the pins are insertedthrough their respective holes and slots. A fastener 168 may passthrough a fastener hole 170 formed in the first pin 160 to restrainaxial movement of the first pin 160. A nut 172 secures the fastener 168to the first pin 160, and a washer 174 protects the first side plate 136from the fastener 168. Similarly, a fastener 176 may pass through afastener hole 178 formed in the second pin 162 to resist axial movementof the second pin 162. The fastener 176 is secured to the second pin 162by way of a nut 180, and a washer 182 protects the first side plate 136from the fastener 176.

A first tightening member receiving hole 190 is formed in the first sideplate 136, and a second tightening member receiving hole 192 is formedin the second side plate 138. In one embodiment, a tightening member,such as a chain or strap, is looped through the holes 190 and 192 tosecure the adjustable clamp 100 to a loader bucket. In anotherembodiment (depicted in FIG. 6 and described in more detail below), oneend of the tightening member includes a hook that is hooked around a pinthat passes through the holes 190 and 192. The holes 190 and 192 areformed in a raised portion of the first and second side plates 136 and138 so that tightening the tightening member exerts a rotational torqueon the second clamping member 114 that moves the second clamping member114 towards the first leg portion 118 of the first clamping member 110.

Turning to FIGS. 3 and 4, the operation of the adjustable clamp 100 willnow be described. FIG. 3 illustrates the adjustable clamp 100 in an openposition, and FIG. 4 depicts the adjustable clamp 100 in a closedposition. A distance D1 separating the first and second clampingsurfaces 112 and 116 in the open position is greater than a distance D2separating the first and second clamping surfaces 112 and 116 in theclosed position. In the open position, the pins 160 and 162 arepositioned in the lowermost portion of their respective slots. In theclosed position, the pins 160 and 162 are positioned in the uppermostportion of their respective slots.

The adjustable clamp 100 is shiftable between the open position and theclosed position by moving the second clamping member 114 relative to thefirst clamping member 110. Arranging the adjustable clamp 100 in theclosed position involves moving second clamping member 114 toward thefirst leg portion 118 of the first clamping member 110, along a linearincline, for example, to decrease the distance separating the first andsecond clamping surfaces 112 and 116. The second clamping member 114 isguided along an angled path P by the sliding interaction between thepins 160 and 162 and their respective slots 146, 156, 148 and 158. Thesecond clamping surface 116 moves together with the second clampingmember 114 along the angled path P. The angled path P forms an angle α₃with the longitudinal axis A1 of the adjustable clamp 100 ofapproximately (e.g., ±10%) 20-60 degrees, and for example between 30-50degrees. In one embodiment, the angle α₃ of the angled path P is equalto the angle α₁ of the inner surface 150 of the first slot 146 and/orthe angle α₂ of the inner surface 152 of the second slot 148 so that theangled path P is parallel to the inner surface 150 and/or the innersurface 152.

The angled path P illustrated in the drawings is a linear-inclined path.In other embodiments, the angled path P may follow a curve. This can beaccomplished by configuring the slots 146, 148, 156 and/or 158 with acurved shape.

FIG. 3 illustrates a force F1 applied to the adjustable clamp 100 tomove the adjustable clamp 100 from the open position to the closedposition. The force F1 may be provided by tightening a chain or strappassing through the tightening member receiving holes 190 and 192 andconnecting the second clamp member 114 to a loader bucket. The force F1may be applied in a direction substantially parallel to the longitudinalaxis A1 of the adjustable clamp 100, or may be a component of a forceapplied substantially in that direction. The force F1 pushes the innersurface 150 of the first slot 146 against the first pin 160 and pushesthe inner surface 152 of the second slot 148 against the second pin 162.Because the inner surfaces 150 and 152 are angled relative to thelongitudinal axis A1, the pins 160 and 162 exert a reaction forceagainst the second clamping member 114 that pushes the second clampingmember 114 in a downward direction orthogonal to the longitudinal axisA1. The slot-and-pin arrangement thus translates a portion of the forceF1, which is substantially parallel to the longitudinal axis A1, into aforce that pushes the second clamping member 114 in a downward directionorthogonal to the longitudinal axis A1. As the pins 160 and 162 slidealong the inner surfaces 150 and 152 of their respective slots 146 and148, the second clamping member 114 is guided along the angled path P.Accordingly, the second clamping surface 116 moves along the angled pathP toward the first clamping surface 112.

FIG. 4 illustrates a force F2 applied to the adjustable clamp 100 tomove the adjustable clamp 100 from the closed position to the openposition. The force F2 may be applied by an operator attempting toremove the adjustable clamp 100 from a loader bucket. The force F2 maybe substantially parallel to the longitudinal axis A1. An inner surface194 of the first slot 146, opposite and parallel to the inner surface150, is pushed against the first pin 160 by the force F2. In a similarmanner, an inner surface 196 of the second slot 148, opposite andparallel to the inner surface 152, is pushed against the second pin 162.Due to their angled configuration, the inner surfaces 194 and 196 exerta reaction force against the second clamping member 114 that pushes thesecond clamping member 114 in an upward direction orthogonal to thelongitudinal axis A1. The slot-and-pin arrangement thus translates aportion of the force F2, which is substantially parallel to thelongitudinal axis A1, into a force that pushes the second clampingmember 114 in an upward direction orthogonal to the longitudinal axisA1. As the pins 160 and 162 slide along the inner surfaces 194 and 196of their respective slots 146 and 148, the second clamping member 114 isguided along the angled path P. As such, the second clamping surface 116moves along the angled path P away from the first clamping surface 112.

FIGS. 5 and 6 illustrate the use of two adjustable clamps 100 and 100′to mount a snow plow 210 onto a loader bucket 212 of a loader machine600 such as a tractor, backhoe, wheel loader, etc. The adjustable clamp100′ is hidden from view in FIG. 5 because it is positioned behind theadjustable clamp 100. The adjustable clamp 100′ is identical to theadjustable clamp 100. Accordingly, the following description of theadjustable clamp 100 and its connection to the snow plow 210 and theloader bucket 212 applies equally to the adjustable clamp 100′.

The snow plow 212 includes a blade 214 and frame 216 supporting theblade 214. In some embodiments, the frame 216 may be pivotally connectedto the blade 214. The frame 216 is removably connected to the connectorplate 130 of the connector plate 130 by fasteners 218.

The loader bucket 212 includes a bottom plate 220 that extends betweentwo spaced apart side plates 222 and 224. An upright plate 226, whichalso spans the distance between the side plates 222 and 224, forms therear end loader bucket 212. As illustrated in FIG. 6, the upright plate226 is attached to the hydraulic arms 602 of the loader machine 600. Thelip L of the loader bucket 212 is formed by the front end of the bottomplate 220. The lip L of the loader bucket 212 is clamped between thefirst and second clamping surfaces 112 and 116 of the adjustable clamp100 to mount the snow plow 210 onto the loader bucket 212. FIG. 5depicts a small gap between the lip L of the loader bucket 212 and thefirst and second clamping surfaces 112 and 116. In actuality, the firstand second clamping surfaces 112 and 116 would press directly againstthe lip L of the loader bucket 212.

Clamping the adjustable clamp 100 onto the lip L of the loader bucket212 involves inserting the lip L of the loader bucket 212 between thefirst clamping member 110 and the second clamping member 114. This canbe accomplished by placing the adjustable clamp 100 on the ground, andsubsequently driving the loading machine forward so the lip L of theloader bucket 212 slides between the first and second clamping members110 and 114. At this point in the process, the adjustable clamp 100 isarranged in the open configuration shown in FIG. 3. Next, a tighteningmember 240, such as a chain or strap, is looped through the tighteningmember receiving holes 190 and 192 of the second clamping member 114 asshown in FIG. 5. The tightening member 240 is also looped through a hookor slotted member 242 protruding from the upright plate 226 of theloader bucket 212. A ratchet mechanism 244 (illustrated in dashed linesin FIG. 5) may be arranged along the length of tightening member 240 totighten the tightening member 240. The ratchet mechanism 244 may possessa handle 246 that allows an operator to use the ratchet mechanism 244 totighten (i.e., shorten) the tightening member 240.

FIG. 6 illustrates an alternative method of attaching the tighteningmember 240 to the adjustable clamp 100 and the loader bucket 212. Thetightening member 240 illustrated in FIG. 6 includes a first hook 250and a second hook 252 arranged at opposite ends of the tightening member240. The first hook 250 is hooked around a pin 254 that passes throughthe tightening member receiving holes 190 and 192 of the second clampingmember 114; and the second hook 252 is hooked around the slotted member242 protruding from the upright plate 226 of the loader bucket 212.Similar to the FIG. 5 embodiment, the ratchet mechanism 244 is arrangedalong the length of the tightening member 240 and allows an operator totighten the tightening member 240.

Once tightened (i.e., shortened), the tightening member 240 pulls thesecond clamping member 114 toward the upright plate 226 of the loaderbucket 212. As described above with reference to FIG. 3, the force F1exerted by the tightening member 240 causes the second clamping member114 to move along the angled path P toward the first clamping member110. The second clamping surface 116 therefore moves downward along theangled path P toward the first clamping surface 112 and clamps the lip Lof the loader bucket 212 between the first and second clamping surfaces112 and 116 as illustrated in FIGS. 5 and 6. After the adjustable clamp100 has been clamped to the loader bucket 212, the adjustable clamp 100may be connected to the frame 216 of the snow plow 210 by way of theconnector plate 130 and the fasteners 218. As an alternative, theadjustable clamp 100 may be connected to the snow plow 210 prior toclamping the adjustable clamp 100 onto the loader bucket 212.

Removal of the adjustable clamp 100 involves loosening the tighteningmember 240 and pulling the adjustable clamp 100 off the lip L of theloader bucket 212. This may be done in a manner consistent with theopening operation described above with reference to FIG. 4.

The adjustable clamp of the present disclosure advantageously provides asubstantially secure connection between a snow plow, or other auxiliarytool, and a loader bucket. The distance separating the clamping surfacesof the adjustable clamp is adjustable so that the clamp can be securelyconnected to a variety of different loader buckets havingdifferently-sized lips. Another advantage of the disclosed adjustableclamp is that the distance separating the clamping surfaces can bedecreased by tightening a chain or strap that connects the adjustableclamp to a loader bucket. This makes adjusting the adjustable clamprelatively easy for an operator who can tighten the chain or straprelatively quickly with a ratchet mechanism, for example. Additionally,the ability to adjust the clamp with a chain or strap enables the clampto provide a substantial amount of clamping force.

While the present disclosure has been described with respect to certainembodiments, it will be understood that variations may be made theretothat are still within the scope of the appended claims.

What is claimed is:
 1. A snow plow assembly, the snow plow assemblycomprising: a snow plow; a first adjustable clamp including a firstclamping member and a second clamping member, the first clamping memberof the first adjustable clamp being connected to the snow plow andpossessing a first clamping surface, the second clamping member of thefirst adjustable clamp possessing a second clamping surface facing thefirst clamping surface, the second clamping member of the firstadjustable clamp being slidably connected to the first clamping memberof the first adjustable clamp such that a distance separating the firstand second clamping surfaces of the first adjustable clamp isadjustable; and a second adjustable clamp including a third clampingmember and a fourth clamping member, the third clamping member of thesecond adjustable clamp being connected to the snow plow and possessinga third clamping surface, the fourth clamping member of the secondadjustable clamp possessing a fourth clamping surface spaced apart fromand facing the third clamping surface, the fourth clamping member of thesecond adjustable clamp being slidably connected to the third clampingmember of the second adjustable clamp such that a distance separatingthe third and fourth clamping surfaces of the second adjustable clamp isadjustable.
 2. The snow plow assembly of claim 1, wherein the secondclamping surface of the first adjustable clamp is movable toward thefirst clamping of the first adjustable clamp surface along an angledpath.
 3. The snow plow assembly of claim 1, comprising: a first slotformed in the second clamping member of the first adjustable clamp, thefirst slot including a first inner surface angled relative to alongitudinal axis of the first adjustable clamp; a first hole formed inthe first clamping member of the first adjustable clamp and aligned withthe first slot; and a first pin passing through the first hole and thefirst slot, the first pin being slidable along the first inner surfaceof the first slot.
 4. The snow plow assembly of claim 3, comprising asecond slot formed in the second clamping member, the second slotincluding a second inner surface parallel to the inner surface of thefirst slot.
 5. The snow plow assembly of claim 4, comprising atightening member receiving hole formed in the second clamping member ofthe first adjustable clamp.
 6. The snow plow assembly of claim 1,wherein the first clamping member of the first adjustable clamp isU-shaped member possessing a first leg portion and a second leg portion,the first leg portion forming the first clamping surface, the second legportion being bordered on opposite sides by the second clamping member.7. The snow plow assembly of claim 1, wherein the second clamping memberof the first adjustable clamp moves away from the snow plow when thesecond clamping surface of the first adjustable clamp moves toward thefirst clamping surface of the first adjustable clamp.
 8. The snow plowassembly of claim 3, the first pin being movable relative to thelongitudinal axis when the first pin slides along the inner surface ofthe first slot.
 9. The snow plow assembly of claim 1, comprising a firstpin extending between the first and the second clamping members, thefirst pin being configured to move together with the first clampingmember when the distance separating the first and second clampingsurfaces is decreased.
 10. The snow plow assembly of claim 9, the firstpin being configured to slide along a surface of the second clampingmember toward the second clamping surface when the distance separatingthe first and second clamping surface is decreased.
 11. A method ofusing an adjustable clamp to mount a snow plow onto a lip of a loaderbucket, the adjustable clamp including a first clamping member slidablyconnected to a second clamping member, the method comprising:positioning the lip of the loader bucket between the first clampingmember and the second clamping member; connecting the second clampingmember to the loader bucket with a chain or strap; tightening the chainor strap to cause the second clamping member to move toward the firstclamping member and thereby clamp the lip of the loader bucket betweenthe first and second clamping members.
 12. The method of claim 11,wherein tightening the chain or strap causes the second clamping memberto move along an angled path toward the first clamping member.
 13. Themethod of claim 11, the first clamping member being slidably connectedto the second clamping member by a pin passing through a hole formed inthe first clamping member and a slot formed in the second clampingmember.
 14. The method of claim 13, the slot possessing an inner surfaceangled relative to the tightened chain or strap.
 15. The method of claim11, wherein the first clamping member is a U-shaped member possessing afirst leg portion and a second leg portion, the first leg portion beingbordered on opposite sides by the second clamping member, and the secondleg portion being pressed against an underside of the lip of the loaderbucket during the tightening of the chain or strap.